family of fishes
(Redirected from Sleeper shark)

The Somniosidae are a family of sharks in the order Squaliformes. They are commonly known as sleeper sharks,[1] because of their slow swimming. They have a low activity level, and seem to have a non-aggressive nature.[2][3]

Somniosus microcephalus


  1. Froese, Rainer, and Daniel Pauly, eds. (2011). "Somniosidae" in FishBase. February 2011 version.
  2. Erin McCarthy (December 18, 2014). "7 Cool Facts About Greenland Sharks". Retrieved August 17, 2016.
  3. Bruce A. Wright (December 8, 2000). "Sleeper Sharks not so sleepy". Arctic Science Journeys, University of Alaska Fairbanks. Retrieved August 17, 2016.